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Finding the Fourth Proportional to 1,750.10, 2,621.61 and 811.73

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Solution

The fourth proportional to 1,750.10, 2,621.61 and 811.73 is: 1,215.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,750.10 : 2,621.61 = 811.73 : x
  2. Step 2: Convert to fraction form
    1,750.10/2,621.61 = 811.73/x
  3. Step 3: Cross multiply
    1,750.10x = 2,621.61 × 811.73
  4. Step 4: Simplify right side
    1,750.10x = 2,128,026.38
  5. Step 5: Solve for x
    x = 2,128,026.38/1,750.10
  6. Step 6: Final answer
    x = 1,215.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.